Fiber bottle



Dec- 31 1935 R. D. HEYMANN n l FIBER BOTTLE Filed Jan. 27, 1954 Patented Dec. 31, 1935 UNITEDI STATES PATENT OFFICE FIBER BOTTLE Roy D. Heymann, Woodbridge, Conn., assignor, by

mesne assignments, to Moulded Pulp Corpora- Jtion, Dover, Del.

Application January 27, 1934, Serial N0.V 708,605

5 Claims. (Cl. 229-51) `bottle at a very low initial cost, which1 cannot be used a second time, but must be thrown away or destroyedafter initial use. In dispensing lubricating oils at filling stations and elsewhere, it is desirable` that the oil be supplied in containers which, when opened for dispensing the oil, must be sufficiently broken or injured to make it practically impossible to refill the container in such a manner as to resemble .an original unbroken package. The buyer is thus assured of the kind and quality of oil which he is purchasing. As hereinafter more fully described, the invention may be embodied in a molded pulp bottle having a body portion and a neck portion terminating in a spout whereby the oil may be conveniently directed to the inlet of a crank case or other equivalent opening. According to the invention, the bottle is molded with a completely closed mouth, that is, the ber wall constituting the neck is extended across the end of the neck so that the end of the neck must be either cut or broken to permit the cil to flow from the spout.

Since a hollow molded article of pulp fiber must have some opening therein for the introduction of pulp stock in the process of molding bottles or containers embodying the present invention, such bottles are molded with a hole in the bottom. The finished bottles are lled through this hole with oil or other liquid to be dispensed, and the hole is thereafter closed by a suitable device such as a cardboard disk or cap secured to the bottom of the bottle.

Various advantageous features of structure wlll be apparent to one skilled in the art from the description of the invention which follows, and from the illustration of an embodiment thereof on the,` drawing, of which b Figure 1 shows in elevation a bottle embodying the invention, parts being broken away to show in section.

Figure 2 is a fragmentary sectional `view of the upper end portion of the bottle shown in Figure 1, the top being shown as separate after being torn away from the remainder of the neck.

Figure 3 is a' fragmentary sectional view showing a modied form of the closure illustrated in Figure l.

The invention may be embodied in bottles or containers which may have a variety of sizes and shapes but which are provided with a reduced neck or spout through which a liquid therein may be conveniently dispensed. As illustrated in Figure 1, a bottle III having a body portion of generally rectangular shape may be provided, a neck portion or spout II being integral with the body portion Il! and tapering to amouth portion I2 of suitable diameter, considerably smaller than that of the body porton III. Bottles of this type may be made by introducing relatively dilute pulp stock intoa foraminous mold of suitable shape', the mold being arranged to form the bottle in inverted position so that the mouth of the bottle is formed at the lower end of the mold and the the hollow mold rapidly so that thetmold is quickly filled therewith, thebers which are suspended in the watery vehicle of the stock beingl deposited on the inner surface ofl the'mold as the white water escapes through the perforations. When sufficient -stock has been introduced into the mold to supply the amount of fiber requisite for a bottle having a wall of suitable thickness, the lstream of stock may be turned off, and air, steam or other equivalent suitable fluid may be introduced through the spout to force the residual white water out of the mold through the gforaminous walls thereof, thisaction serving to even the ber walls formed in the mold and toV compact these walls to some extent. The molded bottle may then be removed from the mold and dried thoroughly by any suitable means. The bottle may be waterproofed, if desired, by impregnating the liber walls thereof with a suitable waterproofing material such as Wax or an equivalent. The wax renders the walls of the bottle suiciently translucent to indicate the liquid level therein when the bottle has been filled. In order to provide an indicator to show whether or not the bottle is sullicienty filled to contain the quantity of' oilor other liquid stated on the label,

a rib I5 may be molded in the wall thereof at a suitable level near the mouth-of the bottle to indicate the liquid level when the correct amount of liquid is in the bottle. Adjacent to the mouth or upper end of the bottle the wall of the neck of the bottle is indented peripherally as at I 6,

upper portion of the bottle and thus makes it practically impossible to restore the bottle to its original condition in which the mouth portion I2 is integral with the neck. If the bottle is intended for use as a container of lubricating oil or the like, it may be advisable or necessary to provide a suitable lining within the bottle to protect the same from any dissolving tendency which the oil may have on the waterproofing material used in the wall of the bottle. To this end, I may line the bottle with a film or layer 20 of oilproof material such as common glue, a mixture of glue and glycerine, a varnish or lacquer, or any other equivalent oilproofv composition. It is preferable that such oilproof composition be easily liqueable by heat or a solvent so that it can be introduced in liquid form into each bottle which is to be oilproofed. The liquid can be sprayed, or can be allowed to flow, over all of the interio-r surfaces of the bottle until the inside of the bottle is completely coated with. a film of such material. Then the excess oilproofng liquid may be drained through the opening in the bottom of the bottle, and the lm within the bottle may be allowed to set. The exterior surface of the bottle may be printed, labeled, or otherwise treated as desired. After lthe bottle has been completed so as to be ready for illingf'it may be inverted to receive oil or other designated liquid through the bottom aperture 2l thereof. While the bottle is still in its inverted position with its bottom uppermost, a piece of heavy paper or cardboard 22 of suitable shape may be secured to the bottom of the bottle as by glue or other satisfactory adhesive so as to close the bottle and to retain therein the oil or liquid which has been placed therein. In order to promote stability of the bottl'e when resting on a plane surface, the bottom may be formed with a peripheral ridge 23 on which the bottle may rest when it is in an upright position. This ridge 23 may be substantially iiush with the outer surface of the closure element 22, or, as indicated in Figure 1, may project beyond the outer surface of the element 22 so that the latter is supported clear of the plane surface on which the bottle rests.

Figure 3 illustrates a slight modification inthe structure of the closure member. As therein shown, the closure member may consist of a paper or cardboard disk 25 having an offset rim portion 26 adapted to engage the bottom surface of the bottle when the central portion of the closure member enters the aperture 2l in the bottom of the bottle. The closure member 25 preferably has a tight frictional t in the aperture 2l, this frictional fit tending'to maintain the closure member 25 in place in the opening. The

offset portion 26 is preferably secured to the bottom face of the bottle by a suitable adhesive which may also be used between the edge surface of the aperture 2l and the surface portion of the closure element 25 engaged therewith.

I claim:-

1. A molded pulp container having a body with an aperture in the bottom thereof and a closed spout projecting inwardly therefrom, said spout and its closure consisting of a continuous translucent wall of pulp molded to shape directly from paper pulp stock, the wall of said spout having a weakened peripheral ring adjacent to the extremity thereof to facilitate tearing off the end portion, said spout also having an index molded thereon to indicate the correct surface level of the contents of the container.

`2. A package of fluent material, comprisinga translucent molded 'pulp container having a body with a sealed filling aperture therein and a closed spout, said spout and its closure consisting of a continuous wall of pulp molded to shape directly from paper pulp stock, and a quantity of fluent material within the container.

3. A package of fluent material, comprising a translucent molded pulp container having a body with an aperture in the bottom thereof and a closed spout projecting therefrom, said spout and a its closure consisting of a single continuous wall of pulp molded to shape directly from paper pulp stock, said spout being molded with a weakened peripheral ring adjacent to its extremity to facilitate tearing off the end portion thereof, a quantity of fluent material within the container, and

a closure element permanently secured over said 40 aperture.

4. A container having a body and a closed spout projecting from said body, said spout and its Aclosure consisting of a continuous layer of paper pulp molded directly from pulp stock.

5. A container having a body and a closed spout projecting therefrom, said spout and its closure consisting of a continuous layer of paper pulp molded directly from pulp stock with a circumferential groove in the Wall of said spout adjacent to the end thereof.

l ROY D. HEYMANN. 

